Bike Rear Mech

Bike Rear Mechs at Swinnerton CyclesPrecise, reliable gear changes start with a quality rear derailleur. Our bike rear mech collection at Swinnerton Cycles covers road, MTB, and gravel options from all major groupset manufacturers — from entry-level mechanical systems to top-tier wireless electronic derailleurs. The rear derailleur is one of...

Bike Rear Mechs at Swinnerton Cycles

Precise, reliable gear changes start with a quality rear derailleur. Our bike rear mech collection at Swinnerton Cycles covers road, MTB, and gravel options from all major groupset manufacturers — from entry-level mechanical systems to top-tier wireless electronic derailleurs. The rear derailleur is one of the most critical components in your drivetrain, and choosing the right one for your cassette range, frame, and groupset is essential. We stock rear mechs from Shimano, SRAM, Campagnolo, and MicroSHIFT. Explore Road Rear Mechs, MTB Rear Mechs, Gravel Rear Mechs, and Rear Mech Spares.

Popular Rear Mechs

Road Rear Mech

Road Rear Mech
MTB Rear Mech

MTB Rear Mech
Gravel Bike Rear Mech

Gravel Bike Rear Mech
Jockey Wheels

Jockey Wheels
Rear Mech Spares

Rear Mech Spares
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  • Shimano Rd-R9250 Charger Cover Spares & AccessoriesShimano Rd-R9250 Charger Cover Spares & Accessories

    Shimano Spares RD-R9250 Charger Cover Replacement for Rear Derailleur Protection

    The Shimano Spares RD-R9250 charger cover is a genuine replacement designed to protect and maintain your rear mech's charging port. Crafted for durability, it ensures reliable performance and extends the life of your transmission components. Easy to install, this cover keeps dirt and moisture...
    £2.99
    £2.99
  • Shimano Ultegra RD-R8000 and RX812 GRX rear derailleur pulley set for bike components, replacement mech pulleys shown.Shimano Ultegra RD-R8000 and RX812 GRX rear derailleur pulley set for bike component replacement.

    Shimano Ultegra RD-R8000/RX812 GRX Rear Derailleur Mech Pulley Set Replacement

    Upgrade your bike’s shifting precision with the Shimano Ultegra RD-R8000/RX812 rear mech pulley set. Designed to fit a variety of Shimano rear derailleurs including Ultegra RD-R8000/R8050, RX800/RX805, GRX RD-RX812/RX817, and XT M8000/M8050, this genuine replacement ensures smooth and reliable gear changes. Regularly replacing your...
    £20.01
    £22.99
    £20.01
    Save £2.98
  • Sram Shifter Lever Assy Kit Apex/Rival 09-11 Spares & Accessoriessram spares rear mech shifter lever assy kit apex rival 09 11 p44718

    Sram Shifter Lever Assembly Kit for Apex/Rival 09-11 Road Bike Spares & Accessories

    Upgrade your bike with the Sram Shifter Lever Assy Kit for Apex and Rival 09-11 models. Designed for precision and durability, it ensures smooth gear changes every time. Perfect for replacing worn parts, this kit maintains optimal transmission performance and enhances your riding experience....
    £26.55
    £35.00
    £26.55
    Save £8.45
  • SRAM Force eTap AXS rear derailleur B-Bolt and limit screws, steel replacement components for precise bike gear shifting.

    SRAM Force Etap AXS Rear Derailleur B-Bolt & B-Screw Steel Limit Screws Replacement

    Upgrade your SRAM Force Etap AXS with this durable rear derailleur B-bolt and B-screw set. Crafted from steel, these limit screws ensure precise gear shifts and reliable performance. Designed specifically for SRAM components, they offer easy installation and long-lasting strength to keep your transmission...
    £22.27
    £30.00
    £22.27
    Save £7.73
  • Sram Spare Rear Derailleur B-Bolt / B-Screw / Limit Screws Rival 36T Etap Axs Spares & Accessories

    SRAM Rear Derailleur B-Bolt, B-Screw & Limit Screws Kit for Rival 36T Etap AXS

    Enhance the performance of your SRAM Rival 36T Etap AXS with this genuine rear derailleur B-bolt, B-screw, and limit screws kit. Designed specifically for SRAM components, these precision parts ensure smooth gear shifting and reliable transmission function. Crafted to fit perfectly, they maintain the...
    £8.33
    £12.00
    £8.33
    Save £3.67
  • Sram Spare Rear Derailleur Chaingap Adjustment Gauge B Gap Tool Gauge Ex1 Spares & Accessories

    SRAM B Gap Tool - Rear Derailleur Chaingap Adjustment Gauge Spare Part BLACK

    SRAM’s B Gap Tool ensures precise chaingap adjustments for your rear derailleur, delivering smooth and reliable shifting performance. Crafted for durability and accuracy, this gauge is essential for fine-tuning your bike’s transmission system. Designed as a spare part, it fits seamlessly with SRAM rear...
    £4.58
    £6.00
    £4.58
    Save £1.42
  • Sram Rear Derailleur Cover Kit Clutch Including Screw Xx1 Eagle Spares & AccessoriesRear Derailleur Cover Kit Clutch Including Screw XX1 Eagle: | Swinnerton Cycles

    SRAM XX1 Eagle Rear Derailleur Cover Kit Clutch with Screw for Drivetrain Protection

    Enhance the reliability of your SRAM XX1 Eagle drivetrain with the Rear Derailleur Cover Kit Clutch, including screw. Designed to protect and secure the rear mech, this kit ensures smooth shifting performance and extends the lifespan of your transmission. Crafted specifically for SRAM components,...
    £13.57
    £15.00
    £13.57
    Save £1.43
  • Sram Rear Derailleur Cover Kit Clutch Including Screw X01 Eagle Spares & AccessoriesRear Derailleur Cover Kit Clutch Including Screw X01 Eagle: | Swinnerton Cycles

    SRAM X01 Eagle Rear Derailleur Cover Kit Clutch with Screw for Drivetrain Maintenance

    Enhance your SRAM X01 Eagle drivetrain with the Rear Derailleur Cover Kit Clutch, designed to maintain optimal performance and protect crucial components. This kit includes the clutch mechanism and screw, ensuring smooth shifting and increased durability. Crafted specifically for SRAM systems, it guarantees compatibility...
    £13.57
    £15.00
    £13.57
    Save £1.43
  • SRAM rear derailleur B-bolt and limit screw kit for XX1, X01, X1 mountain bike components, showing metal hardware and packaging.SRAM XX1, X01, X1 bike rear derailleur B-bolt and limit screw kit, components for precise gear shifting.

    SRAM Rear Derailleur B-Bolt & Limit Screw Kit for XX1 X01 X1 Bikes

    Upgrade your Sram XX1/X01/X1 rear derailleur with this genuine B-Bolt and limit screw kit. Designed for precise adjustment, it ensures smooth shifting and optimal drivetrain performance. Durable and easy to install, this kit keeps your transmission running flawlessly, extending the life of your rear...
    £22.27
    £30.00
    £22.27
    Save £7.73
  • Sram Hanger Bolt For Rear Derailleur X0 2012 10Spd Silver Spares & AccessoriesSram Spare - Rear Derailleur Hanger Bolt Kit X0 Silver 10 Speed: | Swinnerton Cycles

    Sram X0 Rear Derailleur Hanger Bolt Kit Silver 10-Speed Spare Parts

    The Sram Spare Rear Derailleur Hanger Bolt Kit X0 Silver 10 Speed is designed for precise and secure rear mech installation. Crafted for durability, it ensures smooth transmission and reliable performance on every ride. Its silver finish offers corrosion resistance, maintaining both function and...
    £25.00
    £25.00
  • Sram Hanger Bolt For Rear Derailleur X0 2011 10Spd Spares & AccessoriesSram Spare - Rear Derailleur Hanger Bolt Kit X0/X9 Type 2 / 2011 X0/X9 10Speed: | Swinnerton Cycles

    Sram Rear Derailleur Hanger Bolt Kit for X0/X9 Type 2 2011 10Speed

    Ensure smooth gear shifts with the Sram Spare Rear Derailleur Hanger Bolt Kit. Designed for X0/X9 Type 2 2011 10Speed models, this kit guarantees a secure fit and reliable performance. What It’s Good For Replacing worn or damaged derailleur hanger bolts Maintaining optimal rear...
    £25.00
    £25.00
  • Sram B-Screw/Limit Screw Kit For Rear Derailleur X9 2011/X9 Type 2 10Spd Spares & AccessoriesSram Spare - Rear Derailleur B-Screw and Limit Screw Kit X9 Type 2 / 2011X9 10 Speed: | Swinnerton Cycles

    SRAM X9 Type 2 Rear Derailleur B-Screw & Limit Screw Kit 10-Speed 2011

    Ensure smooth shifting with the SRAM B-Screw and Limit Screw Kit for X9 Type 2 rear derailleurs. Designed for precise adjustment, this kit enhances your 10-speed drivetrain’s performance and reliability. What It’s Good For Accurate rear derailleur alignment Improved gear shifting consistency Easy installation...
    £8.00
    £8.00
  • Campagnolo 9X Rear Cable Adjuster Spares & AccessoriesCampagnolo 9X Rear Cable Adjuster Spares & Accessories | Swinnerton Cycles

    Campagnolo 9X Rear Cable Adjuster Spare Part for Precise Gear Tuning

    Enhance your Campagnolo transmission with the 9X Rear Cable Adjuster, designed for precise tuning and smooth gear shifts. This essential spare part ensures optimal rear mech performance, prolonging the life of your drivetrain. Crafted for compatibility with specific Campagnolo models, it offers reliable adjustment...
    £3.15
    £5.00
    £3.15
    Save £1.85
  • Sram Compact Barrel Adjuster Alloy Black Qty 2 Spares & AccessoriesSRAM Compact Barrel Adjuster Alloy Black SRAM Qty 2: | Swinnerton Cycles

    SRAM Compact Alloy Barrel Adjuster Black for Rear Mech & Brake Cable Qty 2

    SRAM Compact Barrel Adjuster Alloy Black offers precision cable tension adjustments for your rear mech and brakes. Crafted from durable alloy, these lightweight adjusters ensure smooth, accurate tuning to enhance your ride. Designed for easy installation, they provide reliable performance and long-lasting durability, making...
    £13.43
    £19.00
    £13.43
    Save £5.57
  • Shimano Rdm593 Pulley Set Spares & AccessoriesShimano Deore Deore RD-M593 tension and guide pulley set | Swinnerton Cycles

    Shimano Deore RD-M593 SGS Rear Derailleur Tension & Guide Pulley Set

    The Shimano Deore RD-M593 tension and guide pulley set ensures smooth and precise shifting for your bike. Designed specifically for the Deore RD-M593 SGS rear derailleur, these genuine Shimano components guarantee durability and optimal performance. Maintaining your transmission with original parts helps extend the...
    £8.99
    £8.99
  • Shimano RD-M772 B-Type rear derailleur spare parts including tension adjusting screw and plate for bicycle components.Shimano RD-M772 B-Type rear derailleur spare B-tension adjusting screw and plate for bicycle component repair.

    Shimano RD-M772 B-Type B-Tension Adjusting Screw & Plate Rear Derailleur Spare

    Ensure optimal performance of your Shimano rear derailleur with the RD-M772 B-tension adjusting screw and plate B-type. This genuine Shimano component is designed for precise chain tension adjustment, enhancing smooth gear shifts and overall bike reliability. Crafted to fit seamlessly with your transmission system,...
    £2.99
    £2.99
  • Shimano RD-M772 rear derailleur stroke adjuster screws and plate replacement components for bike gear shifting.Shimano RD-M772 rear derailleur stroke adjuster screws and plate replacement parts for bike components.

    Shimano RD-M772 Rear Mech Stroke Adjuster Screws and Plate Replacement Parts

    Ensure precise gear shifting with the Shimano RD-M772 stroke adjuster screws and plate. Designed as genuine Shimano replacement parts, they guarantee perfect compatibility and durability for your rear mech. These components maintain optimal transmission performance, helping you enjoy smooth and reliable rides every time....
    £1.99
    £1.99
  • Campagnolo Rear Derailleur Clamping Bolt Spares & AccessoriesCampagnolo Rear Derailleur Clamping Bolt Spares & Accessories | Swinnerton Cycles

    Campagnolo Rear Derailleur Clamping Bolt Spare for Record & Above Models

    Secure your Campagnolo rear derailleur with this reliable clamping bolt. Designed for Record and above models, it ensures optimal performance and durability. Made from high-quality materials, this spare part guarantees a perfect fit and long-lasting function for your bike’s transmission system. What It’s Good...
    £2.64
    £5.00
    £2.64
    Save £2.36
  • Sram Force1 Rear Derailleur Medium Cage 11-Speed T3 Rear MechSRAM Force1 Rear Derailleur Medium Cage 11-Speed T3: | Swinnerton Cycles

    SRAM Force1 Rear Derailleur Medium Cage 11-Speed Road Bike T3

    The SRAM Force1 Rear Derailleur Medium Cage 11-Speed T3 offers precise shifting for road bikes, ensuring smooth and reliable performance on every ride. Designed for durability and efficiency, it perfectly complements your transmission system. Its medium cage design provides optimal chain management, reducing noise...
    £229.00
    £229.00
  • Sram Force Road Rear Derailleur Wifli (Medium Cage) Rear MechSRAM Force Road Rear Derailleur WiFli (Medium Cage): 10SPD MEDIUM | Swinnerton Cycles

    SRAM Force Road Rear Derailleur WiFli Medium Cage 10-Speed 11-32 Cassette Compatible

    The SRAM Force Road Rear Derailleur WiFli (Medium Cage) offers exceptional precision and a wide gear range for serious cyclists. Designed with Exact Actuation technology, it ensures crisp 3mm shifts across all 10 speeds, giving you seamless and reliable performance during every ride. Its...
    £124.00
    £124.00
  • Sram Red 10 Speed Rear Derailleur Wifli Aero Glide (Medium Cage) Rear MechSRAM RED 10 Speed Rear Derailleur WiFli Aero Glide (Medium Cage): 10SPD MEDIUM | Swinnerton Cycles

    SRAM RED 10-Speed Rear Derailleur WiFli Aero Glide Medium Cage 10SPD Rear Gear

    The SRAM RED 10 Speed Rear Derailleur WiFli Aero Glide (Medium Cage) offers precise and reliable shifting performance tailored for road cycling enthusiasts. Its innovative WiFLi technology extends the cage length and adjusts its geometry to smoothly handle an 11-32 cassette, providing a wider...
    £307.00
    £307.00
  • SRAM APEX XPLR 12-speed mechanical rear derailleur for 1x drivetrains, featuring D1 Max 44T capacity and durable cycling components.SRAM APEX XPLR 12-speed mechanical rear derailleur D1 Max 44T for 1x drivetrain, shown on a bicycle component.

    SRAM APEX XPLR 12-Speed Mechanical Rear Derailleur D1 Max 44T for 1x Drivetrains

    The SRAM APEX XPLR Rear Derailleur is designed to elevate your riding experience by offering seamless shifting over a wide gear range. Engineered for 12-speed mechanical drivetrains, it supports cassettes with large 44T cogs, ensuring you have the versatility needed for diverse terrains. With...
    £127.19
    £135.00
    £127.19
    Save £7.81
  • Sram Rear Derailleur Force Axs D2 12-Speed Max 36T (Battery Not Included) Rear Mech

    SRAM Force AXS D2 Rear Derailleur 12-Speed Max 36T Wireless Rear Mech

    Experience unmatched precision and versatility with the Sram Rear Derailleur Force Axs D2 12-Speed Max 36T. Designed for road racing, cyclocross, gravel, and casual coffee rides, this rear mech adapts seamlessly to various riding styles. Its sleek single cage length accommodates cassette sizes from...
    £267.00
    £267.00
  • Campagnolo Chorus 12X Rear Derailleur Rear MechCampagnolo Chorus 12X Rear Derailleur Rear Mech | Swinnerton Cycles

    Campagnolo Chorus 12X Rear Derailleur for Road Bikes with 12-Speed Groupsets

    The Campagnolo Chorus 12X Rear Derailleur merges cutting-edge technology with refined craftsmanship to deliver an exceptional shifting experience for road cyclists. Designed to work seamlessly with both disc and rim brake groupsets, this rear mech embodies the advanced features found in Campagnolo’s top-tier 12-speed...
    £175.00
    £175.00
  • Shimano Rd-M7000 Slx 11-Speed Shadow +Design Rear Derailleur Gs Rear MechShimano SLX RD-M7000 SLX 11-speed Shadow+ design rear derailleur, GS | Swinnerton Cycles

    Shimano SLX RD-M7000 GS 11-Speed Shadow+ Rear Derailleur for MTB Bikes

    The Shimano SLX RD-M7000 GS rear derailleur is engineered to bring professional-grade performance to your mountain bike at an accessible price. Featuring the innovative Shadow+ design, this 11-speed Dyna-Sys11 derailleur offers smooth, reliable shifts while maintaining a low profile to protect against trail hazards....
    £78.82
    £79.99
    £78.82
    Save £1.17
  • MicroSHIFT Mezzo 8/9 speed short cage rear derailleur for MTB and trekking bikes, showing the black component with derailleur cage.MicroSHIFT Mezzo 8/9-speed short cage rear derailleur for MTB and trekking bikes, showing the component's design and construction.

    Microshift Mezzo 8/9 Speed Short Cage Rear Derailleur for MTB & Trekking Bikes

    The Microshift Mezzo 8/9 Speed Short Cage Rear Derailleur offers reliable performance for mid-level mountain and trekking bikes. Its durable aluminium bracket and steel cage ensure long-lasting strength, while the proven design delivers smooth, precise shifting every ride. With updated aesthetics and robust construction,...
    £19.99
    £19.99
  • Sram Rear Derailleur Pulley Kit Red Etap Axs Ceramic 12 Speed Jockey WheelsSRAM Rear Derailleur Pulley Kit Red Etap AXS Ceramic 12 Speed: | Swinnerton Cycles

    SRAM Red Etap AXS 12-Speed Rear Derailleur Pulley Kit Ceramic Road Bike

    Enhance your SRAM Etap AXS 12-speed drivetrain with the Red Ceramic Rear Derailleur Pulley Kit. Designed for road bikes, these ceramic jockey wheels reduce friction and increase stiffness, delivering smoother, more efficient gear shifts. Crafted for durability and lightweight performance, they optimize your ride....
    £131.00
    £152.00
    £131.00
    Save £21.00
  • Sram Blackbox Ceramic Bearing Pulleys Aeroglide Road Jockey WheelsSRAM BlackBox Ceramic Bearing Pulleys AeroGlide Road: | Swinnerton Cycles

    SRAM BlackBox Ceramic Bearing Pulleys AeroGlide Road Cycling Drivetrain Upgrade

    Upgrade your drivetrain with SRAM BlackBox Ceramic Bearing Pulleys, designed to minimize friction and maximize efficiency. These jockey wheels enhance stiffness and durability, ensuring smooth and reliable performance. Their AeroGlide technology dampens noise for a quieter, more comfortable ride. What It’s Good For Reducing...
    £143.88
    £152.00
    £143.88
    Save £8.12
  • Sram Ceramic Bearing Jockey Wheels MTB Fits X.0 2008> & Xx (Pair) Jockey WheelsSRAM Ceramic Bearing Jockey Wheels MTB fits X.0 2008> & XX (pair): | Swinnerton Cycles

    SRAM Ceramic Bearing Jockey Wheels MTB Pair for X.0 2008+ & XX Models

    Upgrade your drivetrain with SRAM Ceramic Bearing Jockey Wheels, designed for smooth, precise shifting on SRAM X.0 2008 and XX models. Crafted for durability and performance, these wheels reduce friction and improve rear mech efficiency. What It’s Good For Enhancing shifting smoothness and accuracy...
    £133.00
    £155.00
    £133.00
    Save £22.00
  • Sram Spare Rear Derailleur Pulley Kit 04 5.0 7/8 Speed Jockey WheelsSram Spare - Rear Derailleur Pulley Kit 04 5.0 7/8 Speed: | Swinnerton Cycles

    SRAM Rear Derailleur Pulley Kit 2004 5.0 7/8 Speed Replacement Parts

    Upgrade your drivetrain with the SRAM Rear Derailleur Pulley Kit for 7/8 speed systems. Designed for smooth, precise shifting, this kit features durable jockey wheels that enhance transmission efficiency and reduce wear. Compatible with SRAM 5.0 2004 models, it ensures reliable performance and easy...
    £12.00
    £12.00
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